#include "postgres.h"
#include "fmgr.h"
#include "libpq/pqformat.h"

Include dependency graph for complex.c:

Data Structures
struct	Complex
Defines
#define	Mag(c) ((c)->x(c)->x + (c)->y(c)->y)
Typedefs
typedef struct Complex	Complex
Functions
Datum	complex_in (PG_FUNCTION_ARGS)
Datum	complex_out (PG_FUNCTION_ARGS)
Datum	complex_recv (PG_FUNCTION_ARGS)
Datum	complex_send (PG_FUNCTION_ARGS)
Datum	complex_add (PG_FUNCTION_ARGS)
Datum	complex_abs_lt (PG_FUNCTION_ARGS)
Datum	complex_abs_le (PG_FUNCTION_ARGS)
Datum	complex_abs_eq (PG_FUNCTION_ARGS)
Datum	complex_abs_ge (PG_FUNCTION_ARGS)
Datum	complex_abs_gt (PG_FUNCTION_ARGS)
Datum	complex_abs_cmp (PG_FUNCTION_ARGS)
	PG_FUNCTION_INFO_V1 (complex_in)
	PG_FUNCTION_INFO_V1 (complex_out)
	PG_FUNCTION_INFO_V1 (complex_recv)
	PG_FUNCTION_INFO_V1 (complex_send)
	PG_FUNCTION_INFO_V1 (complex_add)
static int	complex_abs_cmp_internal (Complex a, Complex b)
	PG_FUNCTION_INFO_V1 (complex_abs_lt)
	PG_FUNCTION_INFO_V1 (complex_abs_le)
	PG_FUNCTION_INFO_V1 (complex_abs_eq)
	PG_FUNCTION_INFO_V1 (complex_abs_ge)
	PG_FUNCTION_INFO_V1 (complex_abs_gt)
	PG_FUNCTION_INFO_V1 (complex_abs_cmp)
Variables
	PG_MODULE_MAGIC

Define Documentation

#define Mag ( c ) ((c)->x*(c)->x + (c)->y*(c)->y)

Definition at line 148 of file complex.c.

Referenced by complex_abs_cmp_internal().

Typedef Documentation

typedef struct Complex Complex

Function Documentation

Datum complex_abs_cmp ( PG_FUNCTION_ARGS )

Definition at line 222 of file complex.c.

References complex_abs_cmp_internal(), PG_GETARG_POINTER, and PG_RETURN_INT32.

{
    Complex    *a = (Complex *) PG_GETARG_POINTER(0);
    Complex    *b = (Complex *) PG_GETARG_POINTER(1);

    PG_RETURN_INT32(complex_abs_cmp_internal(a, b));
}

static int complex_abs_cmp_internal	(	Complex *	a,
		Complex *	b
	)			`[static]`

Definition at line 151 of file complex.c.

References Mag.

Referenced by complex_abs_cmp(), complex_abs_eq(), complex_abs_ge(), complex_abs_gt(), complex_abs_le(), and complex_abs_lt().

{
    double      amag = Mag(a),
                bmag = Mag(b);

    if (amag < bmag)
        return -1;
    if (amag > bmag)
        return 1;
    return 0;
}

Datum complex_abs_eq ( PG_FUNCTION_ARGS )

Definition at line 189 of file complex.c.

References complex_abs_cmp_internal(), PG_GETARG_POINTER, and PG_RETURN_BOOL.

{
    Complex    *a = (Complex *) PG_GETARG_POINTER(0);
    Complex    *b = (Complex *) PG_GETARG_POINTER(1);

    PG_RETURN_BOOL(complex_abs_cmp_internal(a, b) == 0);
}

Datum complex_abs_ge ( PG_FUNCTION_ARGS )

Definition at line 200 of file complex.c.

References complex_abs_cmp_internal(), PG_GETARG_POINTER, and PG_RETURN_BOOL.

{
    Complex    *a = (Complex *) PG_GETARG_POINTER(0);
    Complex    *b = (Complex *) PG_GETARG_POINTER(1);

    PG_RETURN_BOOL(complex_abs_cmp_internal(a, b) >= 0);
}

Datum complex_abs_gt ( PG_FUNCTION_ARGS )

Definition at line 211 of file complex.c.

References complex_abs_cmp_internal(), PG_GETARG_POINTER, and PG_RETURN_BOOL.

{
    Complex    *a = (Complex *) PG_GETARG_POINTER(0);
    Complex    *b = (Complex *) PG_GETARG_POINTER(1);

    PG_RETURN_BOOL(complex_abs_cmp_internal(a, b) > 0);
}

Datum complex_abs_le ( PG_FUNCTION_ARGS )

Definition at line 178 of file complex.c.

References complex_abs_cmp_internal(), PG_GETARG_POINTER, and PG_RETURN_BOOL.

{
    Complex    *a = (Complex *) PG_GETARG_POINTER(0);
    Complex    *b = (Complex *) PG_GETARG_POINTER(1);

    PG_RETURN_BOOL(complex_abs_cmp_internal(a, b) <= 0);
}

Datum complex_abs_lt ( PG_FUNCTION_ARGS )

Definition at line 167 of file complex.c.

References complex_abs_cmp_internal(), PG_GETARG_POINTER, and PG_RETURN_BOOL.

{
    Complex    *a = (Complex *) PG_GETARG_POINTER(0);
    Complex    *b = (Complex *) PG_GETARG_POINTER(1);

    PG_RETURN_BOOL(complex_abs_cmp_internal(a, b) < 0);
}

Datum complex_add ( PG_FUNCTION_ARGS )

Definition at line 124 of file complex.c.

References palloc(), PG_GETARG_POINTER, PG_RETURN_POINTER, Complex::x, and Complex::y.

{
    Complex    *a = (Complex *) PG_GETARG_POINTER(0);
    Complex    *b = (Complex *) PG_GETARG_POINTER(1);
    Complex    *result;

    result = (Complex *) palloc(sizeof(Complex));
    result->x = a->x + b->x;
    result->y = a->y + b->y;
    PG_RETURN_POINTER(result);
}

Datum complex_in ( PG_FUNCTION_ARGS )

Definition at line 49 of file complex.c.

References ereport, errcode(), errmsg(), ERROR, palloc(), PG_GETARG_CSTRING, PG_RETURN_POINTER, Complex::x, and Complex::y.

{
    char       *str = PG_GETARG_CSTRING(0);
    double      x,
                y;
    Complex    *result;

    if (sscanf(str, " ( %lf , %lf )", &x, &y) != 2)
        ereport(ERROR,
                (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
                 errmsg("invalid input syntax for complex: \"%s\"",
                        str)));

    result = (Complex *) palloc(sizeof(Complex));
    result->x = x;
    result->y = y;
    PG_RETURN_POINTER(result);
}

Datum complex_out ( PG_FUNCTION_ARGS )

Definition at line 71 of file complex.c.

References palloc(), PG_GETARG_POINTER, PG_RETURN_CSTRING, snprintf(), Complex::x, and Complex::y.

{
    Complex    *complex = (Complex *) PG_GETARG_POINTER(0);
    char       *result;

    result = (char *) palloc(100);
    snprintf(result, 100, "(%g,%g)", complex->x, complex->y);
    PG_RETURN_CSTRING(result);
}

Datum complex_recv ( PG_FUNCTION_ARGS )

Definition at line 90 of file complex.c.

References buf, palloc(), PG_GETARG_POINTER, PG_RETURN_POINTER, pq_getmsgfloat8(), Complex::x, and Complex::y.

{
    StringInfo  buf = (StringInfo) PG_GETARG_POINTER(0);
    Complex    *result;

    result = (Complex *) palloc(sizeof(Complex));
    result->x = pq_getmsgfloat8(buf);
    result->y = pq_getmsgfloat8(buf);
    PG_RETURN_POINTER(result);
}

Datum complex_send ( PG_FUNCTION_ARGS )

Definition at line 104 of file complex.c.

References buf, PG_GETARG_POINTER, PG_RETURN_BYTEA_P, pq_begintypsend(), pq_endtypsend(), pq_sendfloat8(), Complex::x, and Complex::y.

{
    Complex    *complex = (Complex *) PG_GETARG_POINTER(0);
    StringInfoData buf;

    pq_begintypsend(&buf);
    pq_sendfloat8(&buf, complex->x);
    pq_sendfloat8(&buf, complex->y);
    PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}

PG_FUNCTION_INFO_V1 ( complex_in )

PG_FUNCTION_INFO_V1 ( complex_abs_gt )

PG_FUNCTION_INFO_V1 ( complex_abs_ge )

PG_FUNCTION_INFO_V1 ( complex_abs_eq )

PG_FUNCTION_INFO_V1 ( complex_abs_le )

PG_FUNCTION_INFO_V1 ( complex_abs_lt )

PG_FUNCTION_INFO_V1 ( complex_abs_cmp )

PG_FUNCTION_INFO_V1 ( complex_add )

PG_FUNCTION_INFO_V1 ( complex_send )

PG_FUNCTION_INFO_V1 ( complex_recv )

PG_FUNCTION_INFO_V1 ( complex_out )

Variable Documentation

PG_MODULE_MAGIC

Definition at line 16 of file complex.c.

Header And Logo

complex.c File Reference

Data Structures

Defines

Typedefs

Functions

Variables

Define Documentation

Typedef Documentation

Function Documentation

Variable Documentation